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From 7bdb23c7e8b5159862fff4872f4b0c7e55741f3b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Michel=20D=C3=A4nzer?= <michel.daenzer@amd.com>
Date: Thu, 14 Jun 2018 13:02:07 +0200
Subject: [PATCH 4702/5725] drm/amdgpu: Make amdgpu_vram_mgr_bo_invisible_size
always accurate
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Even BOs with AMDGPU_GEM_CREATE_NO_CPU_ACCESS may end up at least
partially in CPU visible VRAM, in particular when all VRAM is visible.
v2:
* Don't take VRAM mgr spinlock, not needed (Christian König)
* Make loop logic simpler and clearer.
Cc: stable@vger.kernel.org
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c | 20 ++++++++++++++++++--
1 file changed, 18 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
index cce71d3..dc1cb22 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
@@ -107,10 +107,26 @@ static u64 amdgpu_vram_mgr_vis_size(struct amdgpu_device *adev,
*/
u64 amdgpu_vram_mgr_bo_invisible_size(struct amdgpu_bo *bo)
{
- if (bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)
+ struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
+ struct ttm_mem_reg *mem = &bo->tbo.mem;
+ struct drm_mm_node *nodes = mem->mm_node;
+ unsigned pages = mem->num_pages;
+ u64 usage = 0;
+
+ if (adev->gmc.visible_vram_size == adev->gmc.real_vram_size)
+ return 0;
+
+ if (mem->start >= adev->gmc.visible_vram_size >> PAGE_SHIFT)
return amdgpu_bo_size(bo);
- return 0;
+ while (nodes && pages) {
+ usage += nodes->size << PAGE_SHIFT;
+ usage -= amdgpu_vram_mgr_vis_size(adev, nodes);
+ pages -= nodes->size;
+ ++nodes;
+ }
+
+ return usage;
}
/**
--
2.7.4
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